H - Electricity – 05 – K
Patent
H - Electricity
05
K
356/12
H05K 3/00 (2006.01) G03G 15/16 (2006.01)
Patent
CA 1243416
METHOD OF IMAGING RESIST PATTERNS OF HIGH RESOLUTION ON THE SURFACE OF A CONDUCTOR AND A LIQUID TONER FOR USE IN THAT METHOD Abstract of the Disclosure An electrostatic latent image in a desired pattern is formed on an electrostatically imageable surface and toned with a liquid toner to form a toner image on the surface. The toner image is then transferred while still wet to a transfer sheet and then to the surface of a conductor, or the toner image may be transferred directly to the surface of a conductor without a transfer sheet, such direct transfer being preferred. The toner image is then fused to the conductor surface to provide an etch resist pattern of high resolution on the conductor surface. The conductor may then be etched to form a high density printed circuit. In the direct transfer method a nonpolar insulating solvent-carrier is applied to the surface of the conductor and the electrostatically imageable surface.
522782
Bujese David P.
Calabrese Peter J.
Santos Abelardo M.
Schmidt Gary W.
Olin Hunt Specialty Products Inc.
Osler Hoskin & Harcourt Llp
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